When planning to flush the domestic water system after an extended shutdown, what factors must be considered?

When planning to flush the domestic water system after an extended shutdown, understanding the importance of various factors is essential for effective management and prevention of Legionella growth. The correct answer involves considering multiple elements, specifically water temperature and water pressure.

Water temperature plays a critical role in Legionella proliferation, as the bacteria thrive in warm water, particularly in the range of 77°F to 113°F (25°C to 45°C). During the flushing process, ensuring that the water temperature reaches a level that prevents Legionella growth is crucial.

Water pressure is another significant factor, as adequate pressure is necessary to effectively displace stagnant water and ensure thorough flushing of the entire system. Inadequate pressure may lead to incomplete flushing, which could leave behind areas where bacteria can survive and multiply.

Together, these factors—temperature and pressure—are vital to ensure that the flushing is thorough and effective at reducing the risk of Legionella contamination in the plumbing system. Considering all relevant factors contributes to a comprehensive and safe flushing strategy.